Overview
Features and Benefits
- Monitors Two Inputs Simultaneously
- Nine Threshold Combinations
- Three Supply Tolerances (5%, 7.5%, 10%)
- Guaranteed Threshold Accuracy: ±1.5% of Monitored Voltage Over Temperature
- Internal VCC Auto Select
- Power Supply Glitch Immunity
- 200ms Reset Time Delay (LTC2904 Only)
- Adjustable Reset Time Delay (LTC2905 Only)
- Open Drain RST Output
- Guaranteed RST for V1 ≥ 1V or V2 ≥ 1V
- Low Profile (1mm) SOT-23 (ThinSOT™) and Plastic (3mm × 2mm) DFN Packages
Product Details
The LTC2904/LTC2905 are dual supply monitors intended for systems with two supply voltages. The dual supply monitors have a common reset output with delay (200ms for the LTC2904 and adjustable using an external capacitor for the LTC2905). This product provides a precise, space-conscious and micropower solution for supply monitoring.
The LTC2904/LTC2905 feature a tight 1.5% threshold accuracy over the whole operating temperature range, and glitch immunity to ensure reliable reset operation without false triggering. The open drain RST output is guaranteed to be in the correct state for inputs down to 1V.
The LTC2904/LTC2905 also feature three programming input pins, which program the threshold and tolerance level without requiring any external components. These three programming pins provide a total of 27 different voltage level and tolerance combinations, eliminating the need to have different parts for development and implementation of different systems with different voltage levels requiring monitoring function.
Applications
- Desktop and Notebook Computers
- Handheld Devices
- Network Servers
- Core, I/O Monitor
Product Categories
Product Lifecycle
Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Documentation & Resources
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R413 Reliability Data3/26/2018
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Compact, Versatile, Accurate, 3-State Programmable Power Supply Supervisors2/1/2004 LT Journal
Tools & Simulations
LTspice
LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
Models for the following parts are available in LTspice:
LTC2905
Design Resources
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.
Support & Discussions
Sample & Buy
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Buy Now Pricing
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List Pricing
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Lead Times
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Sampling
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